1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
From 33a1f07a4417247dc24819d4e583ca09f56d5a7b Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Mon, 7 Dec 2015 23:41:45 +0000
Subject: [PATCH] Search target sysroot gcc version specific dirs with
multilib.
We install the gcc libraries (such as crtbegin.p) into
<sysroot><libdir>/<target-sys>/5.2.0/
which is a default search path for GCC (aka multi_suffix in the
code below). <target-sys> is 'machine' in gcc's terminology. We use
these directories so that multiple gcc versions could in theory
co-exist on target.
We only want to build one gcc-cross-canadian per arch and have this work
for all multilibs. <target-sys> can be handled by mapping the multilib
<target-sys> to the one used by gcc-cross-canadian, e.g.
mips64-polkmllib32-linux
is symlinked to by mips64-poky-linux.
The default gcc search path in the target sysroot for a "lib64" mutlilib
is:
<sysroot>/lib32/mips64-poky-linux/5.2.0/
<sysroot>/lib32/../lib64/
<sysroot>/usr/lib32/mips64-poky-linux/5.2.0/
<sysroot>/usr/lib32/../lib64/
<sysroot>/lib32/
<sysroot>/usr/lib32/
which means that the lib32 crtbegin.o will be found and the lib64 ones
will not which leads to compiler failures.
This patch injects a multilib version of that path first so the lib64
binaries can be found first. With this change the search path becomes:
<sysroot>/lib32/../lib64/mips64-poky-linux/5.2.0/
<sysroot>/lib32/mips64-poky-linux/5.2.0/
<sysroot>/lib32/../lib64/
<sysroot>/usr/lib32/../lib64/mips64-poky-linux/5.2.0/
<sysroot>/usr/lib32/mips64-poky-linux/5.2.0/
<sysroot>/usr/lib32/../lib64/
<sysroot>/lib32/
<sysroot>/usr/lib32/
Upstream-Status: Pending
RP 2015/7/31
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
gcc/gcc.cc | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
diff --git a/gcc/gcc.cc b/gcc/gcc.cc
index 5569a39a14a..4598f6cd7c9 100644
--- a/gcc/gcc.cc
+++ b/gcc/gcc.cc
@@ -2817,7 +2817,7 @@ for_each_path (const struct path_prefix *paths,
if (path == NULL)
{
len = paths->max_len + extra_space + 1;
- len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
+ len += MAX ((suffix_len + multi_os_dir_len), multiarch_len);
path = XNEWVEC (char, len);
}
@@ -2829,6 +2829,33 @@ for_each_path (const struct path_prefix *paths,
/* Look first in MACHINE/VERSION subdirectory. */
if (!skip_multi_dir)
{
+ if (!(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
+ {
+ const char *this_multi;
+ size_t this_multi_len;
+
+ if (pl->os_multilib)
+ {
+ this_multi = multi_os_dir;
+ this_multi_len = multi_os_dir_len;
+ }
+ else
+ {
+ this_multi = multi_dir;
+ this_multi_len = multi_dir_len;
+ }
+
+ /* Look in multilib MACHINE/VERSION subdirectory first */
+ if (this_multi_len)
+ {
+ memcpy (path + len, this_multi, this_multi_len + 1);
+ memcpy (path + len + this_multi_len, multi_suffix, suffix_len + 1);
+ ret = callback (path, callback_info);
+ if (ret)
+ break;
+ }
+ }
+
memcpy (path + len, multi_suffix, suffix_len + 1);
ret = callback (path, callback_info);
if (ret)
|